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- import alsaaudio, sys
- import time
- channels = 1
- sample_size = 1
- frame_size = channels * sample_size
- frame_rate = 44100
- byte_rate = frame_rate * frame_size
- #******************************************************************
- #******************************************************************
- # OUTPUT *
- #period size controls internal number of frames per period
- period_size = 160
- out = alsaaudio.PCM(alsaaudio.PCM_PLAYBACK, alsaaudio.PCM_NORMAL)
- out.setchannels(channels)
- out.setformat(alsaaudio.PCM_FORMAT_S16_LE)
- out.setrate(frame_rate)
- out.setperiodsize(period_size)
- #******************************************************************
- #******************************************************************
- # INPUT *
- inp = alsaaudio.PCM(alsaaudio.PCM_CAPTURE, alsaaudio.PCM_NORMAL)
- inp.setchannels(channels)
- inp.setrate(frame_rate)
- inp.setformat(alsaaudio.PCM_FORMAT_S16_LE)#16 bit little endian
- inp.setperiodsize(period_size)
- #******************************************************************
- def main():
- while True:
- l, data = inp.read()#l seems to always be 940
- if l:
- #time.sleep(.1)
- out.write(data)
- time.sleep(.001)
- return
- if __name__ == '__main__':
- main()
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